[FIX] theme_test_custo: fix nightly theme preview tour

The theme preview feature before selection was disabled in [1]. This
commit disables the related tour steps that were testing it a nightly
tour... that was red since then.

[1]: https://github.com/odoo/odoo/commit/7cb71e9479df0ee9af0b7ad39302857666726177

Related to task-3454790

closes odoo/design-themes#1081

X-original-commit: 9580ef86ac
Related: odoo/odoo#210294
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

theme_test_custo/tests/test_theme_creation.py

@@ -3,6 +3,7 @@
 from odoo.tests import HttpCase, tagged
 from odoo.addons.website.tests.test_configurator import TestConfiguratorCommon
 
+
 # TODO: `test_themes` tag should not be there, runbot config should be adapted
 #       to test this module too. There is a special config for the theme repo.
 @tagged('post_install', '-at_install', 'test_themes')
@@ -14,6 +15,7 @@ class Crawler(HttpCase):
         theme_custo.with_context(load_all_views=True, apply_new_theme=True)._theme_load(website)
         self.start_tour('/@/example', "theme_menu_hierarchies", login='admin')
 
+
 @tagged('post_install', '-at_install')
 class TestThemeConfigurator(TestConfiguratorCommon):
     def test_website_theme_preview(self):